Message-ID: <1d26172f-348e-6fdf-92f2-217aea26281c@gmail.com>
Date:   Tue, 21 Feb 2023 17:22:04 -0600
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Subject: Re: [bug report] rtw88 / 8821cu driver missing firmware
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To:     Larry Finger <Larry.Finger@lwfinger.net>,
        Ingo Saitz <ingo@hannover.ccc.de>,
        linux-wireless@vger.kernel.org
References: <Y6Bnc+UUY3R/nc6L@spatz.zoo>
 <8b86edab-5bd6-cab0-f8f8-f5c6bc757988@lwfinger.net>
From:   "Alex G." <mr.nuke.me@gmail.com>
In-Reply-To: <8b86edab-5bd6-cab0-f8f8-f5c6bc757988@lwfinger.net>
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Hi,
On 12/19/22 16:53, Larry Finger wrote:
> On 12/19/22 07:30, Ingo Saitz wrote:
>> I saw the 8821cu chipset being merged for linus' next kernel release and
>> decided to give it a try. I have been running 8821cu from
>> https://github.com/morrownr/8821cu-20210118  succeffully, so I know my
>> hardware works.
>>
>> The driver as merged in commit 07cef03b8d44dee7488de3d1585387e603c78676
>> to git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>> can't find any firmware for the driver, and the card does not work. At
>> boot it repeatedly logged failures to my kernel.log:
>>
>> 2022-12-16T19:20:21.563669+01:00 pinguin kernel: [    7.823614] rtw_8821cu 2-11:1.0: Firmware version 24.11.0, H2C version 12

That means that firmware 24.11.0 was loaded, which is the latest in 
linux-firmware as of this writing.

>> 2022-12-16T19:20:21.563670+01:00 pinguin kernel: [    7.906497] usbcore: registered new interface driver rtw_8821cu
>> 2022-12-16T19:20:21.563670+01:00 pinguin kernel: [    7.930657] rtw_8821cu 2-11:1.0 wlx1cbfcefeb2a3: renamed from wlan0
>> 2022-12-16T19:20:59.576907+01:00 pinguin kernel: [  631.847796] rtw_8821cu 2-11:1.0: failed to download firmware
>> 2022-12-16T19:20:59.576910+01:00 pinguin kernel: [  631.849195] rtw_8821cu 2-11:1.0: leave idle state failed
>> 2022-12-16T19:20:59.580239+01:00 pinguin kernel: [  631.851635] rtw_8821cu 2-11:1.0: failed to leave ips state
>> 2022-12-16T19:20:59.580241+01:00 pinguin kernel: [  631.851636] rtw_8821cu 2-11:1.0: failed to leave idle state
>> 2022-12-16T19:21:08.563579+01:00 pinguin kernel: [  640.833372] rtw_8821cu 2-11:1.0: error beacon valid
>> 2022-12-16T19:21:08.563590+01:00 pinguin kernel: [  640.833480] rtw_8821cu 2-11:1.0: failed to download rsvd page
>> 2022-12-16T19:21:08.563591+01:00 pinguin kernel: [  640.833640] rtw_8821cu 2-11:1.0: failed to download firmware
>> 2022-12-16T19:21:08.563591+01:00 pinguin kernel: [  640.835040] rtw_8821cu 2-11:1.0: leave idle state failed
>> 2022-12-16T19:21:08.566911+01:00 pinguin kernel: [  640.837510] rtw_8821cu 2-11:1.0: failed to leave ips state
>> 2022-12-16T19:21:08.566915+01:00 pinguin kernel: [  640.837513] rtw_8821cu 2-11:1.0: failed to leave idle state
>> 2022-12-16T19:21:17.550263+01:00 pinguin kernel: [  649.820641] rtw_8821cu 2-11:1.0: error beacon valid
>> 2022-12-16T19:21:17.550288+01:00 pinguin kernel: [  649.820759] rtw_8821cu 2-11:1.0: failed to download rsvd page
>>

I have noticed the same messages on an 8821cu based adapter. There is 
something wrong with the driver as opposed to missing firmware.

Alex

>> There is no mention of what firmware would be needed in the source code
>> itself, yet the repositoryhttps://github.com/ulli-kroll/rtl8821cu
>> includes a file firmware/rtl8821cufw.bin.
> 
> The firmware that is needed is the same as for the PCIe nersion, namely 
> /lib/firmware/rtw88/rtw8821c_fw.bin. Your distro should have that 
> firmware in package firmware-realtek, or in linux-firmware-realtek. If 
> they do not, you can get it by 'git clone 
> git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git. 
> The firware will be in directory rtw88.
> 
> Larry
> 
>